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Clinical evaluation comparing sealant and amalgam after 7 years: final report
1Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of Michigan, Ann Arbor 48109-1078.
Journal of the American Dental Association (1939)
|November 1, 1988
Summary
Pit and fissure sealants show a high initial retreatment rate but demonstrate superior margin integrity over 7 years compared to amalgam restorations. Sealants are recommended for early cavity prevention under professional supervision.
Area of Science:
- Dentistry
- Preventive Dentistry
- Dental Materials Science
Background:
- Occlusal pits and fissures are susceptible to early caries.
- Preventive treatments aim to protect these vulnerable tooth surfaces.
Purpose of the Study:
- To compare the long-term clinical effectiveness of pit and fissure sealants versus amalgam restorations.
- To evaluate the retreatment rates and margin integrity of both treatment modalities.
Main Methods:
- Contralateral permanent first and second molars were treated with either pit and fissure sealant or amalgam.
- Restorations were monitored over 7 years for retreatment rates and margin status.
Main Results:
- Sealant retreatment rates were highest at 6 months (20%) but decreased to 11% or less over 7 years.
- Over 50% of amalgam restorations showed generalized margin deterioration.
- 55% of sealant margins remained clinically undetectable.
Conclusions:
- Pit and fissure sealants demonstrate favorable long-term margin integrity compared to amalgam.
- Sealant application is supported as an effective preventive treatment within controlled programs and professional supervision.